Sewing-machine.



E. KOELLA,

SEWING MACHINE. 7

APPLICATION HLED DEC. 22, 1911- RENEWED APR. 16. 1915.

1,143,286. Patented June 15, 1915.

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WITNESSES INVENTOR Afforney THE NORRIS PETERS C01. PHOTC4L|THOUWASHINGYDN. D. C.

E. KOELLA.

SEWING MACHINE.

APPLICATION FILED DEC. 22, 1911. RENEWED APR. 16.1915.

1,143,286. Patented June 15, 1915.

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E. K'OELLA.

SEWING MACHINE. APPLICATION FILED DEC. 22. 1911. RENEWED APR. I6. 1915.

1,143,286. Patented June 15, 1915.

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SEWING MACHINE. APPLICATION r1150 DEC-22, 1911. RENEWED APR. 16.1915.

Patented June 15, 1915.

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INVENTOR Azlomey V. B mm Q% 3 I kw n 1 a 11 Fm W g \\1 p w xm 1 \m m 0 Tn 1 1% Q W THE NORRIS PETERS CO-, PHOTGJJTHO WASHINGTUN. D1 C.

is a front elevationof ac ing my improvement; Fig. 2 is a section onERNEST KOELLA, O F KNOXVILLE, TENNESSEE.

SEWING-MACHINE.

masses] Specification of Letters Patent.

Patented June 15, 1915.

Application filed December 22, 1911, Serial No. 667,312. Renewed April16, 1915. Serial No. 21,849.

T all whom, it may concern: I

Be it known that I, ERNEST KonLLA, a citizen of the United States,residing at Knoxville, in the county of Knox and State of Tennessee,have invented a new and useful Improvement in Sewing-Machines, ofwhichthe following is a specification, reference being had to theaccompanying drawmg. 7

My improvement relates particularly to machines for sewing materialwhich is in the form of rope-like masses.

The chief object of the particular form in which my invention is shownembodied in the accompanying drawings is to sew transversely through arope-like mass of parallel cords at intervals, the stitches extendingthrough said mass at different angles perpendicular to the length ofsaid mass, so that in the planes of such sewing the cords of which suchrope-like mass iscomposed will be firmly joined to each other and willso remain. after said cords have been cut transversely between suchsewing planes, to form upholstering tufts, lamp wicks, and other similararticles. But the machine is adapted to other forms of sewing, with orwithout variation of the mechanism. In the preferred form for theparticular work now at hand, such material'is moved longitudinallythrough the machine and is also at intervals partially rotated withreference to its line of longitudinal movement, such rotation taking.place step-by-step between the needle movements until the sewing in agiven transverse plane in the rope-like mass has'been completed, and theentire mass being then-given a longitudinal movement equal to thedistance between two sewing planes.

- This improvement is amodification of the mechanism made the subjectmatter of my application Ser. No. 511,394, filed August 5, 1909, forLetters Patent, renewed December 26, 1912, Serial No. 738,754, for'animprovement in sewing machines. V

"In the accompanying drawings, Figure 1' machine embody the line, 22, ofFig. 1 lookingdownward; Fig. 3 is a longitudinal upright section throughthe guide tube and fixed rope guide shown in Figs. 2 and 4 Fig. 4 is anupright section on the line, 4-4, of Fig. 2 looking toward the right,the needle bar driving shaft andconnections between the latter and themechanism of Fig. 2 being added; Fig. 5 is a front detail elevation ofthe mechanism shown in Fig. 4, the portion of the guide tube shown beingwithout a bearing; Fig. 6 1s a section on the'line, 66, of Fig. 1looking toward theleft; Fig. 7 is a section on the line, 77, of Fig. 1,looking toward the right; Fig. 8 is a transverse upright section throughthe rope looking toward the discharge end of the guide tube.

For convenience in description, the line in which the needlereciprocates is herein termed the needle path, and the rope-like -massupon which the sewing is done is herein termed the rope, while theplaces on said rope to which the sewing is done are termed the sewlngstatlons or sewing planes. These stations or planes are to be separatedfrom each other more or less ac cording to the articles to be made bythe transverse severing of the rope after it has been sewed. i

Referring to. said drawings, A is an ordinary sewing head comprising theusual arm, B,.and the usual base plate, 0. Said base plate has feet, D,resting upon a foundation plate, F, and one or more'bolts, E, rise fromsaid foundation plate, F, through said base plate and serve to bind saidsewing head to said foundation plate.

Extending through the arm, B, of the sewing head, A, is theusualhorizontal, rotary 1 needle bar shaft, 1, for driving the uprightreciprocatory needle bar, 2, which bears at its lower end the needle, 3.The shaft, 1, is surrounded by a loose gear wheel, 4, adjacent which isa clutch, 5, rotating with said shaft and adapted'to engage said gearwheel. Said gear wheel is rotated by a larger spur gear wheel, 6, whichis rigid on a horizontal. driving shaft, 7 resting. in bearings, 8 and9. Said shaft serves as a constantly-moving main driving member. On theouter end of said driving shaft are a fixed pulley, 10, and a loosepulley, 11. By means of a belt applied to said fixed pulley, the latter.is rotated clock-wise as viewed from the right in Fig. 1, wherebycontra-clocl'rwise movement is imparted to the gear wheel, 4, as viewedfrom the same direction. When said clutch is closed the shaft, 1,rotates inthe same direction. For the details of said gearing, referenceis made to my above-mentioned ap for feeding the sheet form cloth orother and are to be regarded as a portion of the stitching mechanism.

Adjacent the needle, 3, is the usual-presser foot, 12, and beneath theneedle and below the base plate, C, is a shuttle. The shuttle, needle,needle bar, and the parts directly associated therewith may be of anywell known form, and I therefore deem it unnecessary to illustrateand-describe the same in detail. And, if so desired, the stitchingmechanism may be of the chain-stitch form, omitting the shuttle.

In lieu of the ordinary reciprocatory feed dog or plate located belowand acting in conjunction with the yielding, presser foot, 12,

material horizontally across the base plate, I use a horizontalguidetube, 13, one end of which is adjacent the needle, and a fixed ropeguide, 14, set axially in line with said tube at the opposite side ofthe needle, and a pair of opposing and constantly-rotating butintermittentlygripping feed rollers, and 81, between which the axialline of said tube andsaidfixed guide, 14, passes. Said grippingrollersare normally forced together sufficiently to make engagement withthe rope lying between them, and when the rope dis' to The heldstationary, said rollers are forced from each other sufiiciently torelease the rope, as will be hereinafter described. And by mechanism tobe hereinafter des'cribed,'the guide tube, 13, is slightly rotatedbetween strokes of the needle until said tube rotation, so that stitchesare taken transversely through the rope in thesame plane at variousangles. The means by which this rotation is effected will be hereinafterdescribed. And it may be here stated that said ing in the next plane orat the next station, whereby the twist (a little morethan onehalf ofaturn) given to the rope during the sewing atione station is undoneduring the sewing at the next station. And'the needle line is a littleat oneside of the axis of said tube so that the needle will penetratethe rope a little at one side of the rope axis and V the stitches willcross each other at diverse points in the sewing plane. (See Fig. 12.)

axis and the perimeter of the longitudinally extended space inelosed bythe tubularguide, 13, so that the needle will, during eachreciprocation, penetrate the rope issuing from said tubular guide at oneside of the axis of the rope; or the path of the rope crosses thestitching line with the axis of the path at one side of said line.

a At the rear of the sewing head and parallel' to the length thereof,and a little above the base plate, C, is a horizontal line shaft,

has been given approximately one-half of a In other words, the needleline is between the 16, having its ends in fixed bearings, 17

Said line shaft receives rotation from the drive shaft by means of thegear wheels, 18 and 19, as described in my above-mentioned-application,such rotation being continuous with the driving'shaft, but at a slowerspeed. 1

The guide tube, .13, rests in long horizontal bearing, 34, secured onthebase plate, C, by means of screws, 35. Oil holes, .36, are formed insaid bearing} The end of said tube which is the farther from the needleis expanded to form an annular head,;37, and

the space within the tubeis-made flaring or funnel-form in said head.Between said at head and the bearing, 34,and-rest1ng aga nst I thelatter, a -collar, 38, surrounds the tube and is *immovably fixedthereto. I Between said collar and said head are si.x2equi-dis-;

tant horizontal rods or- 't eeth, 39,*to be engaged by pawls for thepartialrotation of said tube. The ends ofsaid' rods extend intocavities, 40, in the collar, 38, and into cavi-' Anarchedstandard,'44,:has legs, 45, ris- W V ing from oppositesides of thehead, 37. On the upper end of said standard, is a forward extension, 46,in which is an upright guide way, 47, inwhich rests an uprightreciproing, 34, by means of a screw, 43, and reachcatory bar, 48, havingat its upper endan V anti-friction ,roller, 49, bearing against a cam,20, on the horizontal rotary needle bar driving shaft, 1. The lowerfendof said bar, 48, is forked and a pintle, 21,, extends through the forkend andprojects forward therefrom. A contracting coiled spring, 22, isattached, by its lower end, to the project. ing end of said pintle andby its upper end to a horizontal stud, 23, supported rigidly onthestandard, 44, at a suitable distance above the pintle, 21. Said springconstantly draws upward on the bar, 48, and lifts the latter as far aspermitted by the'cam, 20.

'During each rotation of theneedle bar driving shaft, 1, the cam,20,'forcessaid bar, .48,- downward. Since the, needle bar recipro cates onceduring each rotationof the shaft, 1

1, it follows that there is one reciprocation of the bar, 48, for eachreciprocation of the needle bar and needle. But'the cam, 20,, is soplaced upon the shaft, 1, as to'cause the I bar,48, to movedownwardwhile the needle. bar moves upward, in order that the work easeto be done by said 'bar, 48,-- may be done while the needle is raisedout of the rope which is being sewed. 4 f V In the forked end ofthe bar,48, the upper ends of two pawls, 50, are hinged on the pintle, 21, oneof said pawls extending to one side and the otherto the other side ofthe toothed wheel formed by the collar, 38, head, 37, and teeth, 39.Said pawls are adapted to engage the teeth, 39, for pressure against thelatter when the bar, 48, is moved downward. Each of said pawls has atits lower end a recess, 51, adapted to receive one of thevteeth. AC-shape spring, 52, engages said pawls by its ends so as to draw saidpawls toward each other and toward the tube, 13, and theteeth,"39. Butsaid pawls are alternately held out of engagement; with said teeth bymeans of the horizontal shifting bar, 53. Said bar is supported slidablyin ways, 54:, opposite the end of a shaft, 55, and a cam, 56, which isrigid on said shaft. Said shaft has a bearing in a standard, 55*, andsurrounding said shaft is a spur gear wheel, -5.7, rigid on said shaftand meshing with a smaller spur gear wheel, 58, on the line shaft, 16.Through said gear wheels, 58 and 57, constant rotation is imparted tothe cam, 56, from said line shaft. On the bar, 53, anti-frictionrollers, .59, extend into the path of said cam, said rollers beinglocated at oppositesides of said cam and near enough tothe latter tocause substantially constant engagement between; said rollers andsaidcam. Thus said bar is reciprocated lengthwise, much the same as theneedle bar is reciprocated; but said cam hasa con centric or dwellportion, 56 covering asufiic'ient'arc to cause said bar to remainstationary during the time the needle bar, and needle are reciprocated.And it will be observed that the. pawls, 50, reciprocate during theperiods of rotation of the needle bar; for the needle bar and said pawlsboth receive motion from the needle bar drive shaft, 1, the latterrotating when the clutch,

5, engages'the spur gear, 4, on the shaft, 1. But during such periods ofreciprocation of said pawls and the needle bar, said pawls and said barmustreciprocate alternately; that is to say, when the needle bar risesfrom the rope, the pawls are pushed downward,

one engaging a tooth, 39, and partiallyturning the guide tube while the.needle is free froni the rope. And when the needle bar and needle againdescend, the pawls rise leaving said tube and the rope stationary. thebar, 53, and between the pawls, 50, are two stops, 60,"one adaptel tobear against the right-hand pawl, 50, and. the other adapted to: bearagainst the left-hand pawl,

50. The position of said s'tops'is suchas to holdfthe right-hand, pawlaway from the teeth, 39, when the'bar, .53, is in its righthandpositionand to hold the lefthand pawl away from said teeth when saidbaris initsleft-handposition. Thus, while said pawls are reciprocated inunison by the reciprocatory shaft, 48, only one of said pawls operatesat. any time, and the direction of rotation of the guide tube, 13, ischanged when the 'engagcment'of said pawls is reversed. The intervalsbetween these reversals is determined by the relation of the gears, 57and 58. The'tube, 13, is preferably given a little more than a half turnbetween ward movement. A C-shape'spring, 64L, en-

gages the pawls, 62, with itsends and tends 'topress said pawlstowardeach other and into thepath of the teeth. But the move-- ment of each ofsaid pawls toward the other is limited by a stop, 65, set upon the bar,53,

in position to meet a shoulder, 66, on the adjacent pawl, 62,-and therelative arrangement of the parts is such as to permit each of saidpawls to turn far enough only to engage theteeth, 39, when the adjacentpawl, 50, is permitted to engage said teeth.

For feeding the rope forward longitudinally through the guide tube, 13,periodicallyto bring new sewing planesor stations tothe needle, a pairof horizontal superposed gripping rollers, 80 and 81, are placed atopposite sides of and transversely to'the axiallineofthe guide tube, 13,and the rope ismade to pass between'said rollers. Said rollers are;supportedin two columns, 82, theshaft, 83, of the roller, 80, havingbearings in, said columns, while the shaft, 84, of the upper roller, 81,has bearings in a yoke, 85, movable up and down in upright slots, 86.The shaft, 83, takes power from the line shaft, 16, through spiralgears, 87 and 88.

And the upper roller, 81, receives power from the lower roller, 80,through a spur gear, 89, on the shaft, 83, meshing with the spur gear,90, on the shaft, 4. Since the line shaft, 16, rotates constantly, thesea feed of the rope between said rollers. The roller, 1

81, is pressed downward by pressing the yoke, 85, downward. Thisisaccomplished by means of an upright expanding coiled spring, 91, havingits lower end resting upon said yoke and having its upper end bearingagainst. a bridge, 92. When the rope is not to be fed forward, theeffect of said'spring must be overcome and the-yoke, 85, raised. Forthis purpose, an upright link, 93, is

coupled by itslower end to the yoke and by its upper end to an arm,94,on a rock's'haft,

95,'r'esting in a bearing, 96, supported by a bracket 97 extendinglaterally from the columns, 32, to a point abovethe line shaft, 16,, 0nthe rockshaft, 95, is an arm, 98, extending downward between the shaft,16,

and the columns, 82, into the path of a cam member, 99, on the lineshaft, 16, which has a cam face,l00, on a portion of its circumferenceadapted to press said arm laterally 1 so as to cause the turning of therockshaft,

95, for lifting the arm, 94, link, 93, and yoke, 85. Said cam face, 100,is so placed radially upon the line shaft, 16, and is of such length asto cause the lifting of said yoke and the feed roller, 81, during theopative relation with the stitching mechanism for partially rotatingsaid rope between stitches, substantially as described;

2. In a sewing machine, the combination with a stitching mechanismcomprisingra needle and a needle bar and a rotary needle barshaft, of aconstantly-moving main driving member "in operative relationwithsaidneedle bar shaft for periodically imparting motion to said shaft,mechanism for movlng a ropelengthwise across the needle path,

means for transmitting motion from said main driving member to saidropemo-ving member, and mechanism in operative relat1on with saldneedlebar shaft for partially rotating said rope between stitches, j

substantially as described.

3.,In a sewing machine, the combinatlon with a stltching mechan sm comprsing a needle and a needle bar and a rotary needle bar shaft, of aconstantly-moving main driv ing member in operative relation with saidneedle bar shaft for periodically imparting motion to said shaft,mechanism for moving a rope lengthwise across the needle path,

means for transmitting -motion from said main driving member to saidrope moving member, and mechanism in operative relation with said needlebar shaft for partially rotatingsaid rope between stitches, suchrotation being in one direction during one period and in the otherdirection during another period, substantially as described;

T L-In a sewing machine, the combination w h; a st h s ha wmpri i g aneedle, ofa constantly-moving"main driving memberin operative relationwith said" stitching mechanism for periodically imparting motion to saidmechanism, mechani'sm for moving a ropeflengthwise across the needlepath, "a line, shaft for transmitting motion from said main drivingmember 'to said rope moving mechanism, and

mechanism in operative relation with the stitching mechanism forrotating" said "ropebetwee'n. stitches, substantially as described. i V1 j i i c 5; In a sewing machine, the combination with a stitching:mechanism comprising a member in operative rat an" with said see ngmechan sm T Q reri diqalll mipartlngmotlon to sald mechan sm, mechaieedle, of a constantlymovingmain driving msmfor movinga. ropelengthwise across the needle: a i line shaft" for transmit t n fi r mesm in. r in membe to said rope moving mechan1sm, and mechanism operativerelation withthe stitch- 7 ing mechanism for; partially." rotating saidrope" between jstitche's, etch rotation beingin one direction during oneperiod and in u t n al y gdecra e; r V

v 6. In a-sewing machine, the combination ith t r ra inga per with eamenas inr mr si s at needl if a c i stenfly-me iinsmai driving m m er n.Oper iv ele oi h Said Stitching m cha i m fortnQd y mpartingmotion to.said mechanism, mechanlsm in operative reiaaoii with tl e stitchm h n smf pa tial y rotat g a lr pj 1 we n i ti tchcea d. Oth r me n n? ope atve'rel ation with sa d main dr v ngmemh r o iov ng he rope ja jother iect n whilej the stitching mechanisrnfis out of ac-f t l mamma y a fds rbcd- In a sewing-machine, the combination W stit h n me han sm. f a;constantly m i g ma d i sme i er-in op rative relation with" saidstitching mechanism for V p i d flyf oi p i ting mo i n her o,

m hanism, 1 ope i eir la i wi sa stitching mechanism at moving thematerlal n'one d rectlon between stitches, and

other mearis in operative relation with said main dr vmg memberformovlng the material at an-angle to the direction of a movementbetween stitches while the stitching mechanism 7 8. Ina: sewing machine,combination w tha stitching mechanism comprising a .e .r i o itq mi n;'bist nt 'e ras 1 "described. 11.}

needle, of aconstantly-Inoving main driving member inoperativerelation'with said stitching mechanism, for periodicallyimparting motion to said mechanism, a tubular guide-adjacent theneedle,means in op-I erative relation with saidstitchingmechw 1 1st 0 Per iellrro a n saidiit fller.

guide between stitches, and mechanism in operative relation with saidmain driving memberv for periodically drawing a rope lengthwise throughsaid tubular guide, substantially as described.

9.'In a sewing machine, the combination with a stitching mechanismcomprising a needle, of a constantly-moving main driving memberinoperative relation with said stitching mechanism for periodicallyimparting motion to said mechanism, a tubular guide adjacent the,needle, means in operative relation with said stitching mechanism forpartially rotating said tubular guide between stitches, such rotatingbeing inone 1 direction during one period and in the other directionduring another period, and mechan1sm 1n operative relation with said mamdriving member for, periodically drawing a rope lengthwise through saidtubular guide, substantially as described.

10. In a sewing machine, the combination with a stitching mechanismcomprising a needle, a needle bar'and a needle bar driving shaft, of aconstantly-moving main driving member in operative relation with saidneedle bar driving shaft for periodically imparting motion to saidmechanism, a

-tubular guide adjacent the needle, and

means in operative relation with said needle bar driving shaft forpartially rotating said tubular guide between stitches, such rotatingbeing in one direction during one period and in the other directionduring another period, and mechanism in operative rela-' tion with saidmain. driving member for periodically drawing a rope lengthwise throughsaidtubular guide, substantially as described.

11. In a sewing vmachine, the combination with a stitching mechanismcomprising a needle, of a constantly-moving main driving member inoperative relation with said stitching mechanism for periodicallyimparting motion to said mechanism, a tubular guide adjacent the needle,means in operative relation with said stitching mechanism for partiallyrotating said tubular guide between stitches, and mechanism in operativerelation with said main driving member for periodically drawing .a ropelengthwise through said tubular guide, said rotating means and saiddrawing means acting alternately, substantially as described.

12. In a sewing machine, the combination with a stitching mechanismcomprising a needle, of a constantly-moving main driving member inoperative relation with said'stitching mechanism for periodicallyimparting motion to said mechanism, a tubular guide adjacent the needle,means in operative relation with said stitching mechanism for partiallyrotating said tubular guide between stitches, such rotating being in onedirection during one period and in and mechanism in operative relationwith said main driving member for periodically drawing a rope lengthwisethrough said tubular guide, substantially as described.

13. In a sewing machine, the combination with a stitching mechanismcomprising a needle and a needle bar and a needle bar driving shaft, ofa constantly-moving main driving member in operative relation with saidneedle bar driving shaft for periodically imparting motion to saidshaft, a tubular guide adjacent the needle, means in operative relationwith said needle bar driving shaft for partially rotating said tubularguide between stitches, said rotating means and said drawing meansacting alternately, substantially as described.

14. In a sewing machine, the combination with a stitching mechanismcomprising a needle and a needlebar and a needle bar driving shaft, of aconstantly-moving main driving member in operative relation with saidneedle bar driving shaft for periodically imparting motion to saidshaft, a tubular guide adjacent the needle, and

means in operative relation with said needle bar driving shaft forpartially rotating said tubular guide between stitches, such rotatingbeing in one direction during one period 7 V and in another directionduring another period, and mechanism in operative relation with saidmaindriving member for periodically drawing the rope lengthwise through saidtubular guide, said rotating means and said drawing means actingalternately, substantially as described.

15. In a sewing machine, the combination with the stitching mechanismcomprising a needle and a needle bar and a needle bar driving shaft, ofa cam on said shaft, means for supporting and guiding a rope,

and means in operative relation with said being in one direction duringone period,

and in another direction during another period, substantially asdescribed.

17. In a sewing machine, the combination with the stitching mechanismcomprising a needle and a needle bar and a needle bar driving shaft, ofa cam on said shaft, automatic means for moving a rope lengthwisethrough the needle path, means in op 155 v with a stitching mechanismcompris ng a needle ancbaneedle bar and a rotary needle erative relationwith said cam for partially "rotating the ropebetween stitches,substantiallyas described.

18. In a sewing machme, the combinationwith the stitching mechanismcompris-v inganeedle. and a needle bar and a needle bar drivingshaft, ofa cam onsaid shaft, automatic means for moving a rope lengthwisejthroughthe needle path, means in operative relation with said camrfor partiallyrotating the rope between stitches, such rotation. being in onedirection during one period and in the other direction during anotherperiod, substantially as described. I 19'. In a sewing machine, thecombinatlon bar-shaft, ofa cam on said. shaft, a tubular 1 guide, andmechanism in operative relation with said cam for partially rotatingSfLld' guide between stitches, substantially as described.

r 20. In a sewing machine, the combination withi'a "stitching mechanismcomprising a; needle anda needle bar and a rotary needle bar shaft, of aconstantly-moving main driving member inoperative. relation with saidneedle bar shaft for periodically 1mparting motion to said shaft,mechanism in operative relation said main driving -member for movlng arope lengthwise across "the needle path, means for transmitting mo tlonfrom saidfmain driving member to Stud v rope moving member, a cam onsaid needle barsh'aft,'and mechanism in operative relation with said camfor partiallyrotating I said rope between stitches, substantially asdescribed.

21. In a sewing, machine, the combination with astitchingmechanismcomprising a needle and a needle bar and-a-rotary needle I bar shaft, ofa constantly-moving main driving member in operative relation with saidneedle bar shaft'for periodically imparting motion to said shaft,mechanism in operative relation with said main driving member for movinga rope lengthwise across the needle path, means for transmitting motionfrom said main driving member to said rope-moving member, a cam on saidneedle bar shaft, and-mechanism in operative relation with said cam forpartially rotating said rope between stitches, substantially asdescribed. 22. In a sewing machine, the combination with a stitchingmechanism comprising a needle and a needle bar and a needle bar drivingshaft, of a constantly-moving main .7 driving member in operativerelationwith 60 said needle bar driving shaft for periodicallyimpartingmotion thereto, a cam on saidneedle bar driving shaft,mechanism in i operative relation'wlth said cam for'moving the materialin one direction between stitches, and other means in operativerelationwith said main driving member for movingthe 'material in "anotherdirectlo n'f substantially as described; 7 a

23. In a sewingmachinathe' comblnat on with a stitching mechanismcomprising a while the needle bar driving shaft isati rest,

needle, of aconstantly-moving main driving 7 r member in operativerelation with said stitchingvmechanism for automaticallyperb r odicallyimparting motio'nito; said med a ni'sm, ofmeans for supporting andguiding V a rope, pawl'mechan sm inoperat ve relaj means for p i lyichan e i he en a tion withs'aidstitchingmechanism andrwith I V Said.ng ai d' rpot in meansifoige r tomatically imparting step-by steprotatin1. v I

to i pc ti g m an ,,andlautersetief 'e b twe S d p wl m h nism d' a dapre tinsi me wh eby he ation; 30f 8 5 i e di d' su o in n si' n onedirection during one period "and, in the ioppo rection during another asdescribed.

24:? n' a hiii itl c hb ne bn f q a with, a stitching mechanismicomprisingi a needle, of a constantly-moving" main member n pe i eslatio Wi hs idii stitching mechanism for ;automatically. pe'rig means inoperative: relation said; has, 1 shaft for periodically reversing the"direcscribed.

tion of said gstep-by-step mechanism upon} 7; said rotary member,substantially as ldea g r g 75 '25. In a sewing machine,}the combinationwith the stitchingmechanism'comprisinga 7 needle and a needle bar an'd aneedletibar driving shaft, of a line shaft, a:

member forsupporting andguidinga rope, 'pawls for engaging oppositeSiQBS Off "said" 'member; means operatively con necting said pawlswithsaid needle driving shaft for imparting reciprocatory' motion 'to saidpawls, andmeans'in'opera tive relation with said line shaft for'alter-"nating the engagement] between said, pawlsand said rotatablesupportingjand member, substantially as described '7 V 26. In asewingmachine,the combination with a stitching" mechanism comprising a,needle, of a constantly-moving main driving 7 member in operativerelation with vsaid stitching mechanism for automatically peri odlcallympartlng motion to said'lmecha nism, of a rotatable member for"guidingand supportinga rope,,reciprocable means for imparting partialrotation to said guid ing and supporting 'member, such recipro cablemeans being in operative'relation said stitching mechanism to receivemove- In testimony whereof Ihhave signed my 10 ment in one direction,and a spring for imname, in presence of tWo wltnesses, this 16th partingmotion to said reciprocable means day of November, in the year onethousand in the opposite direction, and means in 0pnine hundred andeleven. erative relation with said main driving member for alternatingthe engagement be- 7 ERNEST KOELLA' tween said reciprocatory means andsaid Witnesses:

rotatable member, substantially as de- CYRUS KEHR,

scribed. V C. A. Monsn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. 0.

